From a4db8d9a95c9d11790b355d5c94b5858b4f3508f Mon Sep 17 00:00:00 2001
From: Craig Everett <zxq9@zxq9.com>
Date: Tue, 7 Apr 2026 18:40:17 +0900
Subject: [PATCH] WIP

---
 src/gd_lib.erl    |  2 +-
 src/gd_v_call.erl | 27 +++++++++++++++++----------
 2 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/src/gd_lib.erl b/src/gd_lib.erl
index fffd704..f4ef441 100644
--- a/src/gd_lib.erl
+++ b/src/gd_lib.erl
@@ -54,7 +54,7 @@ mono_text(Parent, Name, Value) ->
     ok =
         case wxStaticText:setFont(Text, Font) of
             true  -> ok;
-            false -> log(info, "wxStaticText ~p is already monospace.", [Text)
+            false -> tell(info, "wxStaticText ~p is already monospace.", [Text)
         end,
     #w{name = Name, id = wxStaticText:getId(Text), wx = Text}.
 
diff --git a/src/gd_v_call.erl b/src/gd_v_call.erl
index 53b273f..401e114 100644
--- a/src/gd_v_call.erl
+++ b/src/gd_v_call.erl
@@ -28,6 +28,7 @@
          build    = none   :: none | map(),
          args     = []     :: [#w{}],
          kp       = #w{}   :: #w{},
+         params   = []     :: [param()],
          ttl      = #w{}   :: #w{},
          gasprice = #w{}   :: #w{},
          gas      = #w{}   :: #w{},
@@ -43,6 +44,7 @@
 -type fun_name() :: string().
 -type fun_type() :: call | dryr | init.
 -type fun_def()  :: {fun_name(), fun_type()}.
+-type param()    :: {Label :: string(), Check :: fun(), #w{}}.
 
 
 %%% Interface
@@ -247,7 +249,7 @@ handle_troubling(State = #s{frame = Frame}, Info) ->
     State.
 
 
-engage(State = #s{j = J}) ->
+engage(State) ->
     case gd_con:chain_id() of
         {ok, ChainID} -> engage(State, ChainID);
         Error         -> handle_troubling(State, Error)
@@ -285,23 +287,28 @@ params(State = #s{kp = #w{wx = KeyPicker}}) ->
         Error       -> handle_troubling(State, Error)
     end.
 
-params2(State, PK, Nonce) ->
-    Params = extract(State),
 params2(#s{ttl      = #w{wx = TTL_T},
            gasprice = #w{wx = GasPriceT},
            gas      = #w{wx = GasT},
            amount   = #w{wx = AmountT}},
         PK,
         Nonce) ->
-    TTL = wxTextCtrl:getValue(TTL_T),
-    GasPrice = wxTextCtrl:getValue(GasPriceT),
+    ToExtract =
+        [{ttl,      fun gte_0/1, TTL_T},
+         {gasprice, fun gt_0/1,  GasPriceT},
+         {gas,      fun gt_0/1,  GasT},
+         {amount,   fun gt_0/1,  AmountT}],
+    case lists:foldl(fun extract/2, {ok, []}, ToCheck) of
+        {ok, [TTL, GasPrice, Gas, Amount]} ->
+        {error, Out} ->
+    end.
 
-extract(State) -> extract(State, {none, none, none, none}).
+extract({Name, Check, Widget}, {Status, Out}) ->
+    case Check(wxTextCtrl:getValue(Widget)) of
+        {ok, Value} -> {Status, [Value | Out]};
+        Error       -> {error, [{Name, Error}, Out]}
+    end.
 
-extract(State = #s{ttl      = W}, {none, none, none, none}) ->
-extract(State = #s{gasprice = W}, {TTL,  none, none, none}) ->
-extract(State = #s{gas      = W}, {TTL,  GP,   none, none}) ->
-extract(State = #s{amount   = W}, {TTL,  GP,   Gas,  none}) ->
 
 args(#s{args = ArgFields}) ->